package com.cj.DesignMode.strategy;

/**
 * 策略模式  在策略模式中，我们创建表示各种策略的对象和一个行为随着策略对象改变而改变的 context 对象。
 * 策略对象改变 context 对象的执行算法。
 */
public class StrategyPatternDemo {
   public static void main(String[] args) {
      Context context = new Context(new OperationAdd());    
      System.out.println("10 + 5 = " + context.executeStrategy(10, 5));
 
      context = new Context(new OperationSubtract());      
      System.out.println("10 - 5 = " + context.executeStrategy(10, 5));
 
      context = new Context(new OperationMultiply());    
      System.out.println("10 * 5 = " + context.executeStrategy(10, 5));
   }
}